Tamiya AS-series Spray Can Paint Question

I decanted a Tamiya AS-series spray can for the first time.  It airbrushed great, but then I had a surprise that my Iwata airbrush cleaner fluid did not thin the paint during cleanup.  Also, my usual Tamiya X-20A thinner did not work and every other thinner I had from other manufacturers did not work.  I with a ton of effort I was able to get the airbrush cleaned up using Windex, but that was not working terribly well either.  Does anyone know what thinner I should use for Tamiya AS-series spray can paints?  Thank you in advance for any help on this.